Asia’s spot premium for 0.5% very low sulphur fuel oil (VLSFO) eased on Friday amid a flurry of spot offers, snapping a rally that struck six-month highs. The spot premium (MFO05-SIN-DIF) slid to $25.14 a tonne to Singapore quotes on Friday, while the February refining crack (LFO05SGDUBCMc1) was at a premium of $12.04 a barrel …